描述了对生物学上重要的咪唑并[1,2- a ]杂环的简明的一锅三步级联反应。该方法利用微波辅助的[4 + 1]环加成反应(Groebke–Bienaymé–Blackburn反应)中的乙酰氰作为TMSCN的非经典异氰化物替代品,然后在无催化条件下进行Strecker反应。该方法具有操作简便,反应时间短和形成键的效率高的优点。
novel one-step microwave mediated syntheses of arrays of 3-iminoaryl-imidazo[1,2-a]pyridines and imidazo[1,2-a]pyridyn-3-ylamino-2-acetonitriles are reported. Reactions are performed undermicrowave condition in methanol by simply mixing α-amino-pyridines, aldehydes, and trimethylsilylcyanide (TMSCN) with distinct reagent stoichiometries, catalyzed by polymer-bound scandium triflate, to afford either
A concise one-pot 3-step cascade reaction to biologically significant imidazo[1,2-a]heterocycles is described. The methodology utilizes acetylcyanide as a non-classical isocyanide replacement for TMSCN in a microwave-assisted [4+1] cycloaddition (the Groebke–Bienaymé–Blackburn reaction) followed by a Strecker reaction under catalysis free conditions. The methodology proceeds with operational simplicity
描述了对生物学上重要的咪唑并[1,2- a ]杂环的简明的一锅三步级联反应。该方法利用微波辅助的[4 + 1]环加成反应(Groebke–Bienaymé–Blackburn反应)中的乙酰氰作为TMSCN的非经典异氰化物替代品,然后在无催化条件下进行Strecker反应。该方法具有操作简便,反应时间短和形成键的效率高的优点。